In the Copenhagen interpretation, the wavefunction is not a physical entity. It has the same sort of ontological status as a probability distribution. It is not itself a probability distribution, but it is the mathematical object from which probability distributions are derived. And it also has this in common with probability distributions, that when new information about the world is obtained, you have to update it.

It sounds like you're saying the wavefunction represents our uncertainty. My impression is that you know more about grand theories of physics than I do; but I'm confident that the wavefunction does not represent mere uncertainty. Entanglement, the double-slit experiment, the uncertainty principle, etc., can't be explained by uncertainty.